Drive-chain



(ModeL) B. OBORN.

DRIVE CHAIN.

Patented Feb. 21, 1888.

unuum n:

I TTOR/VEY links being straightened out.

UNITED STATES PATENT rricn.

BENJAMIN OBORN, OF MARION, ASSIGNOR TO JOSEPH ANDRE\V JEFFREY,

' OF COLUMBUS, OHIO.

DRIVE=CHAIN.

SPECIFICATION forming part of Letters Patent No. 378,173, dated February21, 1888.

Application filed Apr-115, 1884. Serial No. 126,769. tModcl.)

To aZZ whom it may concern;

Be it known that I, BENJAMIN OBORN, of Marion, in the county of Marionand State of Ohio, have invented certain new and useful III1 provementsin Drive or Sprocket Chains; and I do hereby declare the following to bea full, clear, and exact description of the invention, such aswillenable others skilled in the art to which it appertains to make and usethe same.

Figure l of the drawings is a plan view, the Fig. 2 is an edge View ofFig. 1. Fig. 3 is an edge view of two links in position for coupling oruncoupling. Fig. 4 is an end view of the pintle. Fig. 5 is a side Viewof the pintie.

Like letters indicate like parts in all the figures.

The link is substantially U-shaped, and consists, essentially, of twoside bars, A A, connected by a tubular end bar, B O, which is providedwith a circular seat, I), for the pintle. The opposite ends, a a, arealso provided with circular pintle-seats (Z (I, one of the ends havingupon its outer face a recess, (2'.

D is the pintle, circular in cross section and of such size as to fitclosely the pintleseats.

e is a flange or lip projecting from the pintle at or near one end, andis of such form and thickness as to enter the recess (1' and have itsouter face practically flush with the adjacent portions of the side bar.

0 is a spur or lug projecting from the side bar in such position as tooverlap and engage with the outer face of the flange 6 when the links ofthe chain are straightened out, it beflan e 6 bein seated in the recess(1 that 40 when the links are straightened out the flange will be turnedaround under the spur c of the adjacent link, so that the pintle cannotbe removed when the links are at any angle to each other,which they willordinarily assume when 5 at work. I

By preference I provide the side bars with reenforcing ribs 0 c, whichproject beyond the adjacent portions of the end bar to constitute theselockinglugs, as is plainly indicated at 50 the lefthand end of Fig. 1.

I am aware of Patent No. 376,325 to B. A. Legg, and do not claimanything therein shown; but

What I do claim is- In a drive-chain, the herein-described U- shapedlink having side bars, A A, united by a tubular. end bar, one of saidside bars being recessed, as at d, and having at its opposite end a lo 0in combination with a intie D, on

having a projecting flange, 6, adapted to enter the recess (1 and engagewith the lug c,

, substantially as set forth.

In testi mouy whereof I have signed this specification in the presenceof two subscribing wit- 6 nesses.

BENJ. OBOE-N. Witnesses:

J only A. WOLFORD, J OHN F. liIcNEAL.

